qualificationhaomai88

Si88x4xDataSheetQuadDigitalIsolatorswithDC-DCConverterTheSi88xxintegratesSiliconLabs'provendigitalisolatortechnologywithanon-chipisolateddc-dcconverterthatprovidesregulatedoutputvoltagesof3.
3or5.
0V(or>5Vwithexternalcomponents)atpeakoutputpowerlevelsofupto5W.
Thesedevicespro-videuptofourdigitalchannels.
Thedc-dcconverterhasuser-adjustablefrequencyforminimizingemissions,asoft-startfunctionforsafety,ashut-downoptionandloopcom-pensation.
Thedevicerequiresonlyminimalpassivecomponentsandaminiaturetrans-former.
Theultra-low-powerdigitalisolationchannelsoffersubstantialdatarate,propagationde-lay,sizeandreliabilityadvantagesoverlegacyisolationtechnologies.
Dataratesupto100Mbpsmaxaresupported,andalldevicesachievepropagationdelaysofonly23nsmax.
Orderingoptionsincludeachoiceofdc-dcconverterfeatures,isolationchannelconfigurationsandafailsafemode.
AllproductsarecertifiedbyUL,CSA,VDE,andCQC.
AutomotiveGradeisavailableforcertainpartnumbers.
Theseproductsarebuiltusingautomotive-specificflowsatallstepsinthemanufacturingprocesstoensuretherobust-nessandlowdefectivityrequiredforautomotiveapplications.
IndustrialApplicationsIndustrialautomationsystemsMedicalelectronicsIsolatedswitchmodesuppliesInvertersDataAcquisitionMotorcontrolPLCs,distributedcontrolsystemsAutomotiveApplicationsHybridelectricandelectricvehiclesTractioninvertersBatterymanagementsystemsVehiclecommunicationbussesSafetyRegulatoryApprovalsUL1577recognizedUpto5000VRMSfor1minuteCSAcomponentnotice5AapprovalIEC60950VDEcertificationconformityVDE0884-10CQCcertificationapprovalGB4943.
1KEYFEATURESHigh-speedisolatorswithintegrateddc-dcconverterFully-integratedsecondarysensingfeedback-controlledconverterwithditheringforlowEMIdc-dcconverterpeakefficiencyof83%withexternalpowerswitchUpto5WisolatedpowerwithexternalpowerswitchOptionsincludedc-dcshutdown,frequencycontrol,andsoftstartStandardVoltageConversion3/5Vtoisolated3/5V24Vtoisolated3/5VsupportedPrecisetimingondigitalisolators0–100Mbps18nstypicalpropdelayHighly-reliable:100yearlifetimeHighelectromagneticimmunityandultra-lowemissionsRoHScompliantpackagesSOIC-20widebodySOIC-24widebodyIsolationofupto5000VRMSHightransientimmunityof100kV/s(typical)AEC-Q100qualifiedWidetemprange:-40to+125°CAutomotive-gradeOPNsavailableAIAGcompliantPPAPdocumentationsupportIMDSandCAMDSlistingsupportsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05TableofContents1.
FeatureList42.
OrderingGuide53.
FunctionalDescription.
83.
1TheoryofOperation83.
2DigitalIsolation83.
3DC-DCConverterApplicationInformation93.
3.
1Shutdown93.
3.
2Soft-Start93.
3.
3ProgrammableFrequency.
93.
3.
4ExternalTransformerDriver93.
3.
5VREGA,VREGB93.
3.
6OutputVoltageControl93.
3.
7Compensation.
103.
3.
8ThermalProtection103.
3.
9CycleSkipping103.
3.
10Low-VoltageConfiguration113.
3.
11Low-VoltagetoHigh-VoltageConfiguration123.
3.
12High-VoltagetoLow-VoltageConfiguration133.
3.
13High-VoltageConfiguration143.
4TransformerDesign154.
DigitalIsolatorDeviceOperation174.
1DeviceStartup174.
2UndervoltageLockout174.
3LayoutRecommendations174.
3.
1SupplyBypass174.
3.
2OutputPinTermination.
184.
4Fail-SafeOperatingMode184.
5TypicalPerformanceCharacteristics.
195.
ElectricalSpecifications245.
1CalculatingTotalCurrentConsumption376.
PinDescriptions387.
PackageOutline:20-PinWideBodySOIC.
438.
LandPattern:20-PinSOIC459.
PackageOutline:24-PinWideBodySOIC.
4610.
LandPattern:24-PinSOIC4811.
TopMarkings4911.
1Si88x4xTopMarking(20-PinWideBodySOIC)49silabs.
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Rev.
1.
05|211.
2TopMarkingExplanation(20-PinWideBodySOIC)4911.
3Si88x4xTopMarking(24-PinWideBodySOIC)5011.
4TopMarkingExplanation(24-PinWideBodySOIC)5012.
RevisionHistory.
51silabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|31.
FeatureListHigh-speedisolatorswithintegrateddc-dcconverterFully-integratedsecondarysensingfeedback-controlledconverterwithditheringforlowEMIdc-dcconverterpeakefficiencyof83%withexternalpowerswitchUpto5WisolatedpowerwithexternalpowerswitchOptionsincludedc-dcshutdown,frequencycontrol,andsoftstartStandardVoltageConversion3/5Vtoisolated3/5V24Vtoisolated3/5VsupportedPrecisetimingondigitalisolators0–100Mbps18nstypicalpropdelayHighly-reliable:100yearlifetimeHighelectromagneticimmunityandultra-lowemissionsRoHScompliantpackagesSOIC-20widebodySOIC-24widebodyIsolationofupto5000VRMSHightransientimmunityof100kV/s(typical)AEC-Q100qualifiedWidetemprange:-40to+125°CSi88x4xDataSheetFeatureListsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|42.
OrderingGuideTable2.
1.
Si88x4xOrderingGuide1,2,3,4OrderingPartNumberDC-DCShutdownSoftStartControlFrequencyControlExternalSwitchForwardDigitalChannelsReverseDigitalChannelsInsulationRatingPackageAvailableNowSi88240BC-ISYNNN403.
75kVRMSWBSOIC-20Si88240EC-ISYNNN403.
75kVRMSWBSOIC-20Si88241BC-ISYNNN313.
75kVRMSWBSOIC-20Si88241EC-ISYNNN313.
75kVRMSWBSOIC-20Si88242BC-ISYNNN223.
75kVRMSWBSOIC-20Si88242EC-ISYNNN223.
75kVRMSWBSOIC-20Si88243BC-ISYNNN133.
75kVRMSWBSOIC-20Si88243EC-ISYNNN133.
75kVRMSWBSOIC-20Si88244BC-ISYNNN043.
75kVRMSWBSOIC-20Si88244EC-ISYNNN043.
75kVRMSWBSOIC-20Si88340EC-ISYYYN403.
75kVRMSWBSOIC-24Si88341EC-ISYYYN313.
75kVRMSWBSOIC-24Si88342EC-ISYYYN223.
75kVRMSWBSOIC-24Si88343EC-ISYYYN133.
75kVRMSWBSOIC-24Si88344EC-ISYYYN043.
75kVRMSWBSOIC-24Si88440EC-ISNNNY403.
75kVRMSWBSOIC-20Si88441EC-ISNNNY313.
75kVRMSWBSOIC-20Si88442EC-ISNNNY223.
75kVRMSWBSOIC-20Si88443EC-ISNNNY133.
75kVRMSWBSOIC-20Si88444EC-ISNNNY043.
75kVRMSWBSOIC-20Si88640EC-ISYYYY403.
75kVRMSWBSOIC-24Si88641EC-ISYYYY313.
75kVRMSWBSOIC-24Si88642EC-ISYYYY223.
75kVRMSWBSOIC-24Si88643EC-ISYYYY133.
75kVRMSWBSOIC-24Si88644EC-ISYYYY043.
75kVRMSWBSOIC-24SampleNowSi88240BD-ISYNNN405.
0kVRMSWBSOIC-20Si88240ED-ISYNNN405.
0kVRMSWBSOIC-20Si88241BD-ISYNNN315.
0kVRMSWBSOIC-20Si88x4xDataSheetOrderingGuidesilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|5OrderingPartNumberDC-DCShutdownSoftStartControlFrequencyControlExternalSwitchForwardDigitalChannelsReverseDigitalChannelsInsulationRatingPackageSi88241ED-ISYNNN315.
0kVRMSWBSOIC-20Si88242BD-ISYNNN225.
0kVRMSWBSOIC-20Si88242ED-ISYNNN225.
0kVRMSWBSOIC-20Si88243BD-ISYNNN135.
0kVRMSWBSOIC-20Si88243ED-ISYNNN135.
0kVRMSWBSOIC-20Si88244BD-ISYNNN045.
0kVRMSWBSOIC-20Si88244ED-ISYNNN045.
0kVRMSWBSOIC-20Si88340ED-ISYYYN405.
0kVRMSWBSOIC-24Si88341ED-ISYYYN315.
0kVRMSWBSOIC-24Si88342ED-ISYYYN225.
0kVRMSWBSOIC-24Si88343ED-ISYYYN135.
0kVRMSWBSOIC-24Si88344ED-ISYYYN045.
0kVRMSWBSOIC-24Si88440ED-ISNNNY405.
0kVRMSWBSOIC-20Si88441ED-ISNNNY315.
0kVRMSWBSOIC-20Si88442ED-ISNNNY225.
0kVRMSWBSOIC-20Si88443ED-ISNNNY135.
0kVRMSWBSOIC-20Si88444ED-ISNNNY045.
0kVRMSWBSOIC-20Si88640ED-ISYYYY405.
0kVRMSWBSOIC-24Si88642ED-ISYYYY225.
0kVRMSWBSOIC-24Si88643ED-ISYYYY135.
0kVRMSWBSOIC-24Si88644ED-ISYYYY045.
0kVRMSWBSOIC-24Note:1.
AllpackagesareRoHS-compliantwithpeaksolderreflowtemperaturesof260°CaccordingtotheJEDECindustrystandardclas-sifications.
2.
"Si"and"SI"areusedinterchangeably.
3.
AEC-Q100qualified.
4.
AllSi88xxxExproductoptionsaredefaultoutputhighoninputpowerloss.
AllSi88xxxBxproductoptionsaredefaultlow.
SeeChapter4.
DigitalIsolatorDeviceOperationformoredetailsaboutdefaultoutputbehavior.
Si88x4xDataSheetOrderingGuidesilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|6AutomotiveGradeOPNsAutomotive-gradedevicesarebuiltusingautomotive-specificflowsatallstepsinthemanufacturingprocesstoensurerobustnessandlowdefectivity.
ThesedevicesaresupportedwithAIAG-compliantProductionPartApprovalProcess(PPAP)documentation,andfea-tureInternationalMaterialDataSystem(IMDS)andChinaAutomotiveMaterialDataSystem(CAMDS)listing.
Qualificationsarecompli-antwithAEC-Q100,andazero-defectmethodologyismaintainedthroughoutdefinition,design,evaluation,qualification,andmasspro-ductionsteps.
Table2.
2.
OrderingGuideforAutomotiveGradeOPNs1,2,4,5OrderingPartNumberDC-DCShutdownSoftStartControlFrequencyControlExternalSwitchForwardDigitalChannelsReverseDigitalChannelsInsulationRatingPackageAvailableNowSi88241EC-ASYNNN313.
75kVRMSWBSOIC-20Si88342EC-ASYYYN223.
75kVRMSWBSOIC-24Si88642EC-ASYYYY223.
75kVRMSWBSOIC-24SampleNowSi88241ED-ASYNNN315.
0kVRMSWBSOIC-20Note:1.
AllpackagesareRoHS-compliant.
2.
"Si"and"SI"areusedinterchangeably.
3.
An"R"attheendofthepartnumberdenotestapeandreelpackagingoption.
4.
Automotive-Gradedevices(withan"–A"suffix)areidenticalinconstructionmaterials,topsidemarking,andelectricalparameterstotheirIndustrial-Grade(witha"–I"suffix)versioncounterparts.
Automotive-Gradeproductsareproducedutilizingfullautomotiveprocessflowsandadditionalstatisticalprocesscontrolsthroughoutthemanufacturingflow.
TheAutomotive-Gradepartnumberisincludedonshippinglabels.
5.
AdditionalOrderingPartNumbersmaybeavailableinAutomotive-Grade.
PleasecontactyourlocalSiliconLabssalesrepresen-tativeforfurtherinformation.
6.
InSection11.
TopMarkings,theManufacturingCoderepresentedbyeither"RTTTTT"or"TTTTTT"containsasitsfirstcharacteraletterintherangeNthroughZtoindicateAutomotive-Grade.
Si88x4xDataSheetOrderingGuidesilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|73.
FunctionalDescription3.
1TheoryofOperationTheSi88xxfamilyofproductsiscapableoftransmittingandreceivingdigitaldatasignalsfromanisolatedpowerdomaintoalocalsystempowerdomainwithupto5kVofisolation.
Eachparthasfourunidirectionaldigitalisolationchannels.
Inaddition,Si88xxprod-uctsincludeanintegratedcontrollerandswitchesforadc-dcconverterwhichregulatesoutputvoltagebysensingitontheisolatedside.
3.
2DigitalIsolationTheoperationofanSi88xxdigitalchannelisanalogoustothatofadigitalbuffer,exceptanRFcarriertransmitsdataacrosstheisola-tionbarrier.
Thissimplearchitectureprovidesarobustisolateddatapathandrequiresnospecialconsiderationsorinitializationatstart-up.
AsimplifiedblockdiagramforasingleSi88xxchannelisshowninthefollowingfigure.
RFOSCILLATORMODULATORDEMODULATORABSemiconductor-BasedIsolationBarrierTransmitterReceiverFigure3.
1.
SimplifiedSi88xxChannelDiagramAchannelconsistsofanRFTransmitterandRFReceiverseparatedbyasilicondioxidecapacitiveisolationbarrier.
Inthetransmitter,inputAmodulatesthecarrierprovidedbyanRFoscillatorusingon/offkeying.
ThereceivercontainsademodulatorthatdecodestheinputstateaccordingtoitsRFenergycontentandappliestheresulttooutputBviatheoutputdriver.
ThisRFon/offkeyingschemeissuperiortopulsecodeschemesasitprovidesbest-in-classnoiseimmunity,lowpowerconsumption,andbetterimmunitytomagneticfields.
SeeFigure3.
2ModulationSchemeonpage8formoredetails.
InputSignalOutputSignalModulationSignalFigure3.
2.
ModulationSchemeSi88x4xDataSheetFunctionalDescriptionsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|83.
3DC-DCConverterApplicationInformationTheSi88xxisolateddc-dcconverterisbasedonamodifiedfly-backtopologyandusesanexternaltransformerandSchottkyrectifyingdiodeforlowcostandhighoperatingefficiency.
ThePWMcontrolleroperatesinclosed-loop,peakcurrentmodecontrolandgeneratesisolatedoutputvoltageswith2Waverageoutputpowerat5.
0V.
Optionsareavailablefor24Vdcinputoroutputoperationandexter-nallyconfiguredswitchingfrequency.
Thedc-dccontrollermodulatesapairofinternalprimary-sidepowerswitches(seeFigure3.
3Si883xxBlockDiagram:3V–5VInputto3V–5VOutputonpage11)togenerateanisolatedvoltageatexternaldiodeD1cathode.
Closed-loopfeedbackisprovidedbyacompensatederroramplifier,whichcomparesthevoltageattheVSNSpintoaninternalvoltagereference.
Theresultingerrorvoltageisfedbackthroughtheisolationbarrierviaaninternalfeedbackpathtothecontroller,thuscompletingthecontrolloop.
Forhigherinputsupplyvoltagesthan5V,anexternalFETQ2ismodulatedbyadriverpinESWasshownin(seeFigure3.
6Si886xxBlockDiagram:24VInputto5VOutputonpage14).
AshuntresistorbasedvoltagesensepinRSNprovidescurrentsensingcapa-bilitytothecontroller.
Additionalfeaturesincludeanexternally-triggeredshutdownoftheconverterfunctionalityusingtheSHpinandaprogrammablesoftstartconfiguredbyacapacitorconnectedtotheSSpin.
TheSi88xxcanbeusedinlow-orhigh-voltageconfigurations.
Thesefeaturesandconfigurationsareexplainedinmoredetailbelow.
3.
3.
1ShutdownThisfeatureallowstheoperationofthedc-dcconvertertobeshutdownwhenassertedhigh.
Thisfunctionisprovidedbypin6(labeled"SH"ontheSi882xx)andpin7(labeled"SH_FC"ontheSi883xxandSi886xx).
ThisfeatureisnotavailableontheSi884xx.
Pin6orpin7providetheexactsamefunctionalityandshutdownthedc-dcconverterwhenassertedhigh.
Fornormaloperation,pins6and7shouldbeconnectedtoground.
3.
3.
2Soft-StartThedc-dccontrollerhasaninternaltimerthatcontrolsthepowerconversionstart-uptolimitinrushcurrent.
ThereisalsotheSoftStartoptionwhereuserscanprogramthesoftstartupbyanexternalcapacitorconnectedtotheSSpin.
ThisfeatureisavailableontheSi883xxandtheSi886xx.
3.
3.
3ProgrammableFrequencyThefrequencyofthePWMmodulatorissettoadefaultof250kHzforSi882xx/4xx.
Userscanprogramtheirdesiredfrequencywithinagivenbandof200kHzto800kHzbycontrollingthetimeconstantofanexternalRCconnectedtotheSH_FCandSSpinsforSi883xx/6xx.
3.
3.
4ExternalTransformerDriverThedc-dccontrollerhasinternalswitches(VSW)fordrivingthetransformerwithup-toa5.
5Vvoltagesupply.
Forhighervoltagesontheprimaryside,adriveroutput(ESW)isprovidedthatcandriveanexternalNMOSpowertransistorfordrivingthetransformer.
Whenthisconfigurationisused,ashuntresistorbasedvoltagesensepin(RSN)providescurrentsensingtothecontroller.
3.
3.
5VREGA,VREGBForsupportingvoltagesgreaterthan5.
5V,aninternalvoltageregulator(VREGA,VREGB)needstobeusedinconjunctionwithanexternalNPNtransistor,aresistorandacapacitortoprovideregulatedvoltagetotheIC.
3.
3.
6OutputVoltageControlTheisolatedoutputvoltage(VOUT)issensedbyaresistordividerthatprovidesfeedbacktothecontrollerthroughtheVSNSpin.
Thevoltageerrorisencodedandtransmittedbacktotheprimarysidecontrolleracrosstheisolationbarrier,whichinturnchangesthedutycycleofthetransformerdriver.
TheequationforVOUTisasfollows:VOUT=VSNS*(1+R1R2)+R1*IOFFSETSi88x4xDataSheetFunctionalDescriptionsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|93.
3.
7CompensationThedc-dcconverterusespeakcurrentmodecontrol.
Theloopiscompensatedbyconnectinganexternalresistorinserieswithaca-pacitorfromtheCOMPpintoGNDB.
Thecompensationresistance,RCOMPisfixedat49.
9kΩforSi882xx/3xxand100kΩforSi884xx/6xxtomatchinternalresistance.
Capacitancevalueisgivenbythefollowingequation,wherefCiscrossoverfrequency:CCOMP=62*π*fC*RCOMPFormoredetailsonthecalculationsinvolved,pleaseseeAN892:DesignGuideforIsolatedDC/DCUsingtheSi882xx/883xx.
3.
3.
8ThermalProtectionAthermalshutdowncircuitisincludedtoprotectthesystemfromover-temperatureevents.
Thethermalshutdownisactivatedatajunc-tiontemperaturethatpreventspermanentdamagefromoccurring.
3.
3.
9CycleSkippingCycleskippingisincludedtoreduceswitchingpowerlossesatlightloads.
Thisfeatureistransparenttotheuserandisactivatedauto-maticallyatlightloads.
Theproductoptionswithintegratedpowerswitches(Si882xx/3xx)mayneverexperiencecycleskippingduringoperationevenatlightloadswhiletheexternalpowerswitchoptions(Si884xx/6xx)arelikelytohavecycleskippingstartatlightloads.
Si88x4xDataSheetFunctionalDescriptionsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|103.
3.
10Low-VoltageConfigurationThelow-voltageconfigurationisusedforconverting3.
0Vto5.
5V.
AllproductoptionsoftheSi882xxandSi883xxareintendedforthisconfiguration.
AnadvantageofSi88xxdevicesoverotherconvertersthatusethissametopologyisthattheoutputvoltageissensedonthesecon-darysidewithoutrequiringadditionaloptocouplersandsupportcircuitrytobiasthoseoptocouplers.
Thisallowsthedc-dctooperatewithsuperiorlineandloadregulationwhilereducingexternalcomponentsandincreasinglifetimereliability.
Inatypicaldigitalsignalisolationapplication,thedc-dcpowerstheSi882xxandSi883xxVDDBasshowninthefigurebelow.
Inaddi-tiontopoweringtheisolatedsideofthedc-dccandeliverupto2Wofpowertootherloads.
Thedc-dcrequiresaninputcapacitor,C2,blockingcapacitor,C1,transformer,T1,rectifyingdiode,D1,andanoutputcapacitor,C3.
ResistorsR1andR2dividetheoutputvolt-agetomatchtheinternalreferenceoftheerroramplifier.
Type1loopcompensationmadebyRCOMPandCCOMParerequiredattheCOMPpin.
Thoughitisnotnecessaryfornormaloperation,werecommendthatasnubberbeusedtominimizeradiatedemissions.
Moredetailscanbefoundin"AN892:DesignGuideforIsolatedDC-DCUsingtheSi882xx/883xx".
CMOSIsolationFreq.
ControlandShutdownSoftStartUVLOPowerFETDC-DCControllerVSWSH_FCSSVDDACSSRFSWPowerFETErrorAmpandCompensationEncoderUVLOVDDBVSNSCOMPVREGR1Usedinapplicationswhereconverteroutputis>5.
5VHVREGReferenceVinVoutC1T1D1C3HFRXHFTXR2C2RCOMPCCOMPA4B4HFRXHFTXA2B2HFTXHFRXA3B3HFTXHFRXA1B1HFTXHFRXSi8834xFigure3.
3.
Si883xxBlockDiagram:3V–5VInputto3V–5VOutputSi88x4xDataSheetFunctionalDescriptionsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|113.
3.
11Low-VoltagetoHigh-VoltageConfigurationThelow-voltagetohigh-voltageconfigurationisusedforconverting3.
0V–5.
5Vupto24V.
Inatypicaldigitalsignalisolationapplication,thedc-dcpowerstheSi882xxandSi883xxVOUTasshowninthefigurebelow.
Inaddi-tiontopoweringtheisolatedsideofthedc-dc,itcandeliverupto2Wofpowertootherloads.
Thedc-dcrequiresaninputcapacitor,C2,blockingcapacitor,C1,transformer,T1,rectifyingdiode,D1,andanoutputcapacitor,C3.
ResistorsR1andR2dividetheoutputvoltagetomatchtheinternalreferenceoftheerroramplifier.
TosupplyVDDBthatrequiresvoltagelowerthan5.
5V,Q3transistorisbiasedandfilteredbyR5andC4.
Type1loopcompensationmadebyRCOMPandCCOMParerequiredattheCOMPpin.
Thoughitisnotnecessaryfornormaloperation,werecommendthatasnubberbeusedtominimizeradiatedemissions.
MoredetailscanbefoundinAN892:DesignGuideforIsolatedDC-DCUsingtheSi882xx/883xx.
CMOSIsolationFreq.
ControlandShutdownSoftStartUVLOPowerFETDC-DCControllerVSWSH_FCSSVDDACSSRFSWPowerFETErrorAmpandCompensationEncoderVSNSCOMPR1VinVoutC1T1D1C3HFRXHFTXR2C2RCOMPCCOMPVDDBVREGBUVLOVREGReferenceR5C4Q3A4B4HFRXHFTXA2B2HFTXHFRXA3B3HFTXHFRXA1B1HFTXHFRXSi8834xFigure3.
4.
Si883xxBlockDiagram:3V–5VInputtoupto24VOutputSi88x4xDataSheetFunctionalDescriptionsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|123.
3.
12High-VoltagetoLow-VoltageConfigurationThehigh-voltageconfigurationisusedforconvertingupto24Vto3.
3Vor5.
0V.
AllproductoptionsoftheSi884xxandSi886xxareintendedforthisconfiguration.
Si884xxandSi886xxcanbeusedfordc-dcapplicationsthathaveprimarysidevoltagegreaterthan5.
5V.
Thedc-dcconverterusestheisolatedflybacktopology.
Withthistopology,theswitchandsenseresistorareexternal,allowinghigherswitchingvoltages.
DigitalisolatorsupplyVDDAoftheSi884xxandSi886xxrequireasupplylessthanorequalto5.
5V.
Ifasuitablesupplyisnotavailableontheprimaryside,theVREGAvoltagereferencewithexternalNPNtransistorcansupplyVDDA.
Thiseliminatestheneedtodesignanaddi-tionallinearregulatorcircuit.
LiketheSi882xxandSi883xx,theoutputvoltageissensedonthesecondarysidewithoutrequiringaddi-tionaloptocouplersandsupportcircuitrytobiasthoseoptocouplers.
Thisallowsthedc-dctooperatewithsuperiorlineandloadregula-tion.
ThefigurebelowshowstheblockdiagramofanSi886xxwithexternalcomponents.
Si886xxisdifferentfromtheSi882xx/883xxasithasexternally-controlledswitchingfrequencyandsoftstart.
Thedc-dcrequiresinputcapacitorC2,transformerT1,switchQ1,senseresistorR4,rectifyingdiodeD1andanoutputcapacitorC3.
TosupplyVDDA,Q2transistorisbiasedandfilteredbyR3andC1.
Exter-nalfrequencyandsoftstartbehaviorissetbyCSSandRFSW.
ResistorsR1andR2dividetheoutputvoltagetomatchtheinternalreferenceoftheerroramplifier.
Type1loopcompensationmadebyRCOMPandCCOMParerequiredattheCOMPpin.
Thoughitisnotnecessaryfornormaloperation,werecommendtouseasnubber,tominimizehigh-frequencyemissions.
Forfurtherdetails,seeAN901:DesignGuideforIsolatedDC-DCUsingtheSi884xx/886xx.
CMOSIsolationSi8864xFreq.
ControlandShutdownSoftStartUVLODC-DCControllerESWFC_SHSSVDDACSSRFSWErrorAmpandCompensationEncoderVDDBVSNSCOMPR2VOUTT1D1C3HFRXHFTXR1VREGReferenceVREGARSNGNDPFETDriverCurrentSensingR4R3Q1C1Q2VinC2VREGBUsedinapplicationswhereconverteroutputis>5.
5VRCOMPCCOMPUVLOVREGReferenceA4B4HFRXHFTXA2B2HFTXHFRXA3B3HFTXHFRXA1B1HFTXHFRXFigure3.
5.
Si886xxBlockDiagram:24VInputto5VOutputSi88x4xDataSheetFunctionalDescriptionsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|133.
3.
13High-VoltageConfigurationThehigh-voltageconfigurationisusedforconvertinginputvoltageupto24Vtooutputvoltageashighas24V.
AllproductoptionsoftheSi884xxandSi886xxareintendedforthisconfiguration.
Si884xxandSi886xxcanbeusedfordc-dcapplicationsthathaveprimarysidevoltagegreaterthan5.
5V.
Thedc-dcconverterusestheisolatedflybacktopology.
Withthistopology,theswitchandsenseresistorareexternal,allowinghigherswitchingvoltages.
DigitalisolatorsupplyVDDAoftheSi884xxandSi886xxrequireasupplylessthanorequalto5.
5V.
Ifasuitablesupplyisnotavailableontheprimaryside,theVREGAvoltagereferencewithexternalNPNtransistorQ2cansupplyVDDA.
Thiseliminatestheneedtodesignanadditionallinearregulatorcircuit.
LiketheSi882xxandSi883xx,theoutputvoltageissensedonthesecondarysidewithoutrequiringadditionaloptocouplersandsupportcircuitrytobiasthoseoptocouplers.
Thisallowsthedc-dctooperatewithsuperiorlineandloadregulation.
Figure3.
6Si886xxBlockDiagram:24VInputto5VOutputonpage14showstheblockdiagramofanSi886xxwithexternalcompo-nents.
Si886xxisdifferentfromtheSi882xx/883xxasithasexternally-controlledswitchingfrequencyandsoftstart.
Thedc-dcrequiresinputcapacitorC2,transformerT1,switchQ1,senseresistorR4,rectifyingdiodeD1andanoutputcapacitorC3.
TosupplyVDDB,Q3transistorisbiasedandfilteredbyR5andC4.
ExternalfrequencyandsoftstartbehaviorissetbyCSSandRFSW.
ResistorsR1andR2dividetheoutputvoltagetomatchtheinternalreferenceoftheerroramplifier.
Type1loopcompensationmadebyRCOMPandCCOMParerequiredattheCOMPpin.
Thoughitisnotnecessaryfornormaloperation,werecommendtouseasnubber,tominimizehigh-frequencyemissions.
Forfurtherdetails,see"AN901:DesignGuideforIsolatedDC-DCUsingtheSi884xx/886xx".
CMOSIsolationSi8864xFreq.
ControlandShutdownSoftStartUVLODC-DCControllerESWFC_SHSSVDDACSSRFSWErrorAmpandCompensationEncoderVDDBVSNSCOMPR2VOUTT1D1C3HFRXHFTXR1VREGReferenceVREGARSNGNDPFETDriverCurrentSensingR4R3Q1C1Q2VinC2VREGBRCOMPCCOMPUVLOVREGReferenceR5C4Q3A4B4HFRXHFTXA2B2HFTXHFRXA3B3HFTXHFRXA1B1HFTXHFRXFigure3.
6.
Si886xxBlockDiagram:24VInputto5VOutputSi88x4xDataSheetFunctionalDescriptionsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|143.
4TransformerDesignThefollowingtableprovidesalistoftransformersandtheirparametriccharacteristicsthathavebeenvalidatedtoworkwithSi882xx/3xxproducts(inputvoltage3to5V)andSi884xx/Si886xxproducts(inputvoltageof24V).
Itisrecommendedthatusersorderthetrans-formersfromthevendorsperthepartnumbersgivenbelow.
RefertoAN892andAN901forvoltagetranslationapplicationsnotlistedbelow.
Tomanufacturetransformersfromyourpreferredsuppliersthatmaynotbelistedbelow,pleasespecifytosuppliertheparametricchar-acteristicsasspecifiedinthetablebelowforagiveninputvoltageandisolationrating.
Table3.
1.
TransformerSpecificationsTransformerSupplierOrderingPart#InputVoltageOutputVoltageTurnsRatioP:SLeakageInductancePrimaryInductancePrimaryResistanceIsolationRatingUMEC(http://www.
umec-usa.
com)UTB02185s4.
5–5.
5V3.
0–5.
5V1.
0:4.
0100nHmax2H±5%0.
05max2.
5kVRMSUMEC(http://www.
umec-usa.
com)UTB02205s12V,24V3.
3–5.
0V,15V3.
0:1.
0800nHmax25H±5%0.
135max2.
5kVRMSUMEC(http://www.
umec-usa.
com)UTB02240s4.
5–5.
5V3.
0–5.
5V1.
0:4.
0100nHmax2H±5%0.
05max5kVRMSUMEC(http://www.
umec-usa.
com)UTB02250s7–24V3.
3–5.
5V3.
0:1.
0600nHmax25H±5%0.
135max5kVRMSCoilcraft1(http://www.
coil-craft.
com)TA7608-AL4.
5–5.
5V3.
0–5.
5V1.
0:4.
060nHmax2H±5%0.
033max2.
5kVRMSCoilcraft1(http://www.
coil-craft.
com)TA7618-AL4.
5–5.
5V3.
0–5.
5V1.
0:4.
064nHmax2.
0H±5%0.
031max5kVRMSCoilcraft1(http://www.
coil-craft.
com)TA7788-AL12V5V,15V1.
00:1.
25:0.
75554nHmax25H±5%0.
49max5kVRMSCoilcraft1(http://www.
coil-craft.
com)UA790212V5V,15V3.
0:1.
0971nHmax25H±5%0.
075max5kVRMSTDK(http://www.
tdk.
com)P100940_A14.
5–5.
5V3.
0–5.
5V1.
0:4.
040nHmax2.
0H±10%0.
1max2.
4kVRMSMentech1(http://www.
mnc-tek.
com)TTER09-0457S18-24V15V,24V1.
0:1.
0550nHmax25H±10%0.
4max2.
5kVRMSMentech1(http://www.
mnc-tek.
com)TTER09-0458S18-24V8-24V1.
0:1.
0550nHmax25H±10%0.
4max5kVRMSSi88x4xDataSheetFunctionalDescriptionsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|15TransformerSupplierOrderingPart#InputVoltageOutputVoltageTurnsRatioP:SLeakageInductancePrimaryInductancePrimaryResistanceIsolationRatingMentech1(http://www.
mnc-tek.
com)TTEP09-0568S13.
0-5.
5V5.
0V1.
0:4.
0100nHmax1.
5μH±8%0.
05max5kVRMSPulse(http://www.
pulsee-lectron-ics.
com/)PA4896NL8–24V7–24V1.
0:1.
0650nHmax25H±10%0.
25max2.
5kVRMSPulse(http://www.
pulsee-lectron-ics.
com/)PA4897NL8–24V7–24V1.
0:1.
0650nHmax25H±10%0.
25max5kVRMSNotes:1.
AEC-Q200qualified.
2.
Forreferencedesigndetails,seeAN892:DesignGuideforIsolatedDC/DCusingtheSi882xx/883xxorAN901:DesignGuideforIsolatedDC/DCusingtheSi884xx/886xx.
Si88x4xDataSheetFunctionalDescriptionsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|164.
DigitalIsolatorDeviceOperationTable4.
1.
Si88xxLogicOperationVIInputVDDI11,2,3,4VDDO11,2,3,4VOOutputCommentsHPPHNormaloperation.
LPPLXUPPL4H4UpontransitionofVDDIfromun-poweredtopowered,VOreturnstothesamestateasVI.
XPUPUndeterminedUpontransitionofVDDOfromun-poweredtopowered,VOreturnstothesamestateasVI.
Note:1.
VDDIandVDDOaretheinputandoutputpowersupplies.
VIandVOaretherespectiveinputandoutputterminals.
2.
P=powered;UP=unpowered.
3.
NotethatanI/Ocanpowerthedieforagivensidethroughaninternaldiodeifitssourcehasadequatecurrent.
Thissituationshouldbeavoided.
WerecommendthatI/O'snotbedrivenhighwhenprimarysidesupplyisturnedofforwhenindc-dcshut-downmode.
4.
SeeChapter2.
OrderingGuidefordetails.
Thisistheselectablefail-safeoperatingmode(orderingoption).
WhenVDDBispow-eredviatheprimarysideandtheintegrateddc-dc,thedefaultoutputsareundeterminedassecondarysidepowerisnotavailablewhenprimarysidepowershutsoff.
4.
1DeviceStartupOutputsareheldlowduringpowerupuntilVDDxisabovetheUVLOthresholdfortimeperiodtSU.
Followingthis,theoutputsfollowthestatesofinputs.
4.
2UndervoltageLockoutUndervoltageLockout(UVLO)isprovidedtopreventerroneousoperationduringdevicestartupandshutdownorwhenVDDxisbelowitsspecifiedoperatingcircuitsrange.
BothSideAandSideBeachhavetheirownundervoltagelockoutmonitors.
EachsidecanenterorexitUVLOindependently.
Forexample,SideAunconditionallyentersUVLOwhenVDDAfallsbelowVDDUV–andexitsUVLOwhenVDDArisesaboveVDDUV+.
SideBoperatesthesameasSideAwithrespecttoitsVDDsupply.
4.
3LayoutRecommendationsToensuresafetyintheenduserapplication,highvoltagecircuits(i.
e.
,circuitswith>30VAC)mustbephysicallyseparatedfromthesafetyextra-lowvoltagecircuits(SELVisacircuitwith109ΩNote:1.
Maintenanceofthesafetydataisensuredbyprotectivecircuits.
TheSi88xxprovidesaclimateclassificationof40/125/21.
Si88x4xDataSheetElectricalSpecificationssilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|35Table5.
7.
IECSafetyLimitingValues1ParameterSymbolTestConditionWBSOIC-20,WBSO-IC-24UnitSafetyTemperatureTS150°CSafetyInputCurrentISθJA=55°C/W(WBSOIC-20),VDDA=5.
5V,TJ=150°C,TA=25°C413mADevicePowerDissipationPD2.
27WNote:1.
Maximumvalueallowedintheeventofafailure.
RefertothethermalderatingcurveinFigure5.
5WBSOIC-20/24ThermalDe-ratingCurve(DependenceofSafetyLimitingValuesperVDE)onpage36.
Table5.
8.
ThermalCharacteristicsParameterSymbolWBSOIC-20,WBSOIC-24UnitICJunction-to-AirThermalRe-sistanceθJA55°C/WFigure5.
5.
WBSOIC-20/24ThermalDeratingCurve(DependenceofSafetyLimitingValuesperVDE)Table5.
9.
AbsoluteMaximumRatings1ParameterSymbolMinMaxUnitStorageTemperatureTSTG–65+150°CJunctionTemperatureTJ—+150°CInput-sideSupplyVoltageVDDAVDDP–0.
66.
0VSi88x4xDataSheetElectricalSpecificationssilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|36ParameterSymbolMinMaxUnitOutputsupplyVDDB–0.
66.
0VVoltageonanyPinwithrespecttoGroundVIN–0.
5VDD+0.
5VOutputDriveCurrentperChannelIO10mAInputCurrentforVREGA,VREGBIREG—1mALeadSolderTemperature(10s)—260°CESDperAEC-Q100HBM—4kVCDM—2kVMaximumIsolation(InputtoOut-put)(1sec)WBSOIC-20,WBSOIC-24—6500VRMSNote:1.
Permanentdevicedamagemayoccuriftheabsolutemaximumratingsareexceeded.
Functionaloperationshouldberestrictedtotheconditionsasspecifiedintheoperationalsectionsofthisdatasheet.
Exposuretoabsolutemaximumratingconditionsforex-tendedperiodsmayaffectdevicereliability.
5.
1CalculatingTotalCurrentConsumptionForcalculatingdynamicsupplycurrent,usethefollowingguidelines:Thedynamiccurrentiscalculatedasfollows:IDD(ac)=(CL)*(V)*(D2)*1E3WhereIDD(ac)isthedynamiccomponentofcurrent,peroutputchannel,inmADisthedata-rateofthatchannel,inMbpsCListheloadcapacitanceconnectedtotheoutput,inpFVistheVDDontheoutputside,inVoltsForexample,fortheSi88x42ED-IS,thetotalcurrentcanbecalculatedasfollows:TheaverageDCIDDA/BistheaverageoftheDCcurrentvaluesatinput0andinput1,forVDDAandVDDBrespectively(maxvaluesused),asstatedinthetableaboveforSi88x42ED.
CL,pFVDD,VData-rate,MBpsIDD(ac),peroutputchannel,mATotalIDDA(ac),mATotalIDDB(ac),mAAverageDCIDDA,mAAverageDCIDDB,mATotalIDDA,mATotalIDDB,mA203.
3100.
330.
660.
669.
358.
310.
018.
96Si88x4xDataSheetElectricalSpecificationssilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|376.
PinDescriptionsIsolationBarrier1234569102019181716151211HFXMTRHFXMTRHFRCVRHFRCVRGNDPVSWVDDPVDDAGNDASHA3A4GNDBVDDBDNC/VREGBNCVSNSCOMPB3B4781413A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRSi88240IsolationBarrier2019181716151211HFXMTRHFXMTRHFRCVRHFRCVRGNDPVSWVDDPVDDAGNDASHA3A4GNDBVDDBDNC/VREGBNCVSNSCOMPB3B41413A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRSi88241IsolationBarrier1234569102019181716151211HFXMTRHFXMTRHFRCVRHFRCVRGNDPVSWVDDPVDDAGNDASHA3A4GNDBVDDBDNC/VREGBNCVSNSCOMPB3B4781413A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRSi88242IsolationBarrier1234569102019181716151211HFXMTRHFXMTRHFRCVRHFRCVRGNDPVSWVDDPVDDAGNDASHA3A4GNDBVDDBDNC/VREGBNCVSNSCOMPB3B4781413A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRSi88243IsolationBarrier1234569102019181716151211HFXMTRHFXMTRHFRCVRHFRCVRGNDPVSWVDDPVDDAGNDASHA3A4GNDBVDDBDNC/VREGBNCVSNSCOMPB3B4781413A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRSi8824412345691078Figure6.
1.
Si8824xPinConfigurationsSi88x4xDataSheetPinDescriptionssilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|38IsolationBarrier123456222423212019GNDPVSWVDDPVDDAGNDANCGNDBVDDBDNC/VREGBNCVSNSCOMPSi88344781817NCSH_FCSSNC11121413HFXMTRHFXMTRHFRCVRHFRCVRA3A4B3B49101615A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRIsolationBarrier123456222423212019GNDPVSWVDDPVDDAGNDANCGNDBVDDBDNC/VREGBNCVSNSCOMPSi88341781817NCSH_FCSSNC11121413HFXMTRHFXMTRHFRCVRHFRCVRA3A4B3B49101615A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRIsolationBarrier123456222423212019GNDPVSWVDDPVDDAGNDANCGNDBVDDBDNC/VREGBNCVSNSCOMPSi88340781817NCSH_FCSSNCIsolationBarrier123456222423212019GNDPVSWVDDPVDDAGNDANCGNDBVDDBDNC/VREGBNCVSNSCOMPSi88343781817NCSH_FCSSNCIsolationBarrier123456222423212019GNDPVSWVDDPVDDAGNDANCGNDBVDDBDNC/VREGBNCVSNSCOMPSi88342781817NCSH_FCSSNC11121413HFXMTRHFXMTRHFRCVRHFRCVRA3A4B3B49101615A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVR11121413HFXMTRHFXMTRHFRCVRHFRCVRA3A4B3B49101615A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVR11121413HFXMTRHFXMTRHFRCVRHFRCVRA3A4B3B49101615A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRFigure6.
2.
Si8834xPinoutDiagramsSi88x4xDataSheetPinDescriptionssilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|39IsolationBarrier1234569102019181716151211HFXMTRHFXMTRHFRCVRHFRCVRGNDPRSNESWVDDAGNDAVREGAA3A4GNDBVDDBDNC/VREGBNCVSNSCOMPB3B4781413A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRSi88443IsolationBarrier1012345692019181716151211HFXMTRHFXMTRHFRCVRHFRCVRGNDPRSNESWVDDAGNDAVREGAA3A4GNDBVDDBDNC/VREGBNCVSNSCOMPB3B4781413A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRSi88442IsolationBarrier1234569102019181716151211HFXMTRHFXMTRHFRCVRHFRCVRGNDPRSNESWVDDAGNDAVREGAA3A4GNDBVDDBDNC/VREGBNCVSNSCOMPB3B4781413A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRSi88444IsolationBarrier1234569102019181716151211HFXMTRHFXMTRHFRCVRHFRCVRGNDPRSNESWVDDAGNDAVREGAA3A4GNDBVDDBDNC/VREGBNCVSNSCOMPB3B4781413A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRSi88440IsolationBarrier1234569102019181716151211HFXMTRHFXMTRHFRCVRHFRCVRGNDPRSNESWVDDAGNDAVREGAA3A4GNDBVDDBDNC/VREGBNCVSNSCOMPB3B4781413A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRSi88441Figure6.
3.
Si8844xPinoutDiagramsSi88x4xDataSheetPinDescriptionssilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|40IsolationBarrier123456222423212019GNDPRSNESWVDDAGNDAVREGAGNDBVDDBDNC/VREGBNCVSNSCOMPSi88641781817NCSH_FCSSNC11121413HFXMTRHFXMTRHFRCVRHFRCVRA3A4B3B49101615A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRIsolationBarrier123456222423212019GNDPRSNESWVDDAGNDAVREGAGNDBVDDBDNC/VREGBNCVSNSCOMPSi88640781817NCSH_FCSSNCIsolationBarrier123456222423212019GNDPRSNESWVDDAGNDAVREGAGNDBVDDBDNC/VREGBNCVSNSCOMPSi88643781817NCSH_FCSSNCIsolationBarrier123456222423212019GNDPRSNESWVDDAGNDAVREGAGNDBVDDBDNC/VREGBNCVSNSCOMPSi88642781817NCSH_FCSSNC11121413HFXMTRHFXMTRHFRCVRHFRCVRA3A4B3B49101615A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVR11121413HFXMTRHFXMTRHFRCVRHFRCVRA3A4B3B49101615A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVR11121413HFXMTRHFXMTRHFRCVRHFRCVRA3A4B3B49101615A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRIsolationBarrier123456222423212019GNDPRSNESWVDDAGNDAVREGAGNDBVDDBDNC/VREGBNCVSNSCOMPSi88644781817NCSH_FCSSNC11121413HFXMTRHFXMTRHFRCVRHFRCVRA3A4B3B49101615A1A2B1B2HFXMTRHFXMTRHFRCVRHFRCVRFigure6.
4.
Si8864xPinoutDiagramsSi88x4xDataSheetPinDescriptionssilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|41Table6.
1.
Si88x4xPinDescriptionsPinNameDescriptionDC-DCInputSideVDDPPowerstageprimarypowersupply.
VREGAVoltagereferenceoutputforexternalvoltageregulatorpin.
GNDPPowerstageground.
ESWPowerstageexternalswitchdriveroutput.
VSWPowerstageinternalswitchoutput.
SSSoftstartupcontrol.
SH,SH_FCShutdownandSwitchfrequencycontrol.
RSNPowerstagecurrentsenseinput.
DC-DCOutputSideVSNSPowerstagefeedbackinput.
COMPPowerstagecompensation.
DNC/VREGBVoltagereferenceoutputforexternalvoltageregulatorpin.
ThispinhasaZenerconnectedinternally.
Usethispinasreferenceonlywhenoutputvoltagefromdc-dcis>5.
5V.
Ifoutputvoltageis≤5.
5V,thispinshouldbereadasDNCorDoNotConnect,andshouldbenoconnect.
NCNoconnect;thispinisnotconnectedtothesilicon.
DigitalIsolatorVDDASideVDDAPrimarysidesignalpowersupply.
A1–A4I/Osignalchannel1–4.
GNDAPrimarysidesignalground.
DigitalIsolatorVDDBSideVDDBSecondarysidesignalpowersupply.
B1–B4I/Osignalchannel1–4.
GNDBSecondarysidesignalground.
Si88x4xDataSheetPinDescriptionssilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|427.
PackageOutline:20-PinWideBodySOICFigure7.
120-PinWideBodySOIConpage43illustratesthepackagedetailsforthe20-pinwide-bodySOICpackage.
Table7.
120-PinWideBodySOICPackageDiagramDimensionsonpage43liststhevaluesforthedimensionsshownintheillustration.
Figure7.
1.
20-PinWideBodySOICTable7.
1.
20-PinWideBodySOICPackageDiagramDimensionsDimensionMinMaxA—2.
65A10.
100.
30A22.
05—b0.
310.
51c0.
200.
33D12.
80BSCE10.
30BSCE17.
50BSCe1.
27BSCL0.
401.
27h0.
250.
75θ0°8°aaa—0.
10Si88x4xDataSheetPackageOutline:20-PinWideBodySOICsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|43DimensionMinMaxbbb—0.
33ccc—0.
10ddd—0.
25eee—0.
10fff—0.
20Note:1.
Alldimensionsshownareinmillimeters(mm)unlessotherwisenoted.
2.
DimensioningandTolerancingperANSIY14.
5M-1994.
3.
ThisdrawingconformstoJEDECOutlineMS-013,VariationAC.
4.
RecommendedreflowprofileperJEDECJ-STD-020Cspecificationforsmallbody,lead-freecomponents.
Si88x4xDataSheetPackageOutline:20-PinWideBodySOICsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|448.
LandPattern:20-PinSOICFigure8.
120-PinSOICPCBLandPatternonpage45illustratesthePCBlandpatterndetailsforthe20-pinSOICpackage.
Table8.
124-PinSOICPCBLandPatternDimensionsonpage45liststhevaluesforthedimensionsshownintheillustration.
Figure8.
1.
20-PinSOICPCBLandPatternTable8.
1.
24-PinSOICPCBLandPatternDimensionsDimensionmmC19.
40E1.
27X10.
60Y11.
90Note:1.
ThisLandPatternDesignisbasedonIPC-7351designguidelinesforDensityLevelB(MedianLandProtrusion).
2.
AllfeaturesizesshownareatMaximumMaterialCondition(MMC),andacardfabricationtoleranceof0.
05mmisassumed.
Si88x4xDataSheetLandPattern:20-PinSOICsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|459.
PackageOutline:24-PinWideBodySOICFigure9.
124-PinWideBodySOIConpage46illustratesthepackagedetailsforthe24-pinwide-bodySOICpackage.
Table9.
124-PinWideBodySOICPackageDiagramDimensionsonpage46liststhevaluesforthedimensionsshownintheillustration.
Figure9.
1.
24-PinWideBodySOICTable9.
1.
24-PinWideBodySOICPackageDiagramDimensionsDimensionMinMaxA—2.
65A10.
100.
30A22.
05—b0.
310.
51c0.
200.
33D15.
40BSCE10.
30BSCE17.
50BSCe1.
27BSCL0.
401.
27h0.
250.
75θ0°8°aaa—0.
10bbb—0.
33Si88x4xDataSheetPackageOutline:24-PinWideBodySOICsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|46DimensionMinMaxccc—0.
10ddd—0.
25eee—0.
10fff—0.
20Note:1.
Alldimensionsshownareinmillimeters(mm)unlessotherwisenoted.
2.
DimensioningandTolerancingperANSIY14.
5M-1994.
3.
ThisdrawingconformstoJEDECOutlineMS-013,VariationAD.
4.
RecommendedreflowprofileperJEDECJ-STD-020specificationforsmallbody,lead-freecomponents.
Si88x4xDataSheetPackageOutline:24-PinWideBodySOICsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|4710.
LandPattern:24-PinSOICFigure10.
124-PinSOICPCBLandPatternonpage48illustratesthePCBlandpatterndetailsforthe24-pinSOICpackage.
Table10.
124-PinSOICPCBLandPatternDimensionsonpage48liststhevaluesforthedimensionsshownintheillustration.
Figure10.
1.
24-PinSOICPCBLandPatternTable10.
1.
24-PinSOICPCBLandPatternDimensionsDimensionmmC19.
40E1.
27X10.
60Y11.
90Note:1.
ThisLandPatternDesignisbasedonIPC-7351designguidelinesforDensityLevelB(MedianLandProtrusion).
2.
AllfeaturesizesshownareatMaximumMaterialCondition(MMC),andacardfabricationtoleranceof0.
05mmisassumed.
Si88x4xDataSheetLandPattern:24-PinSOICsilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|4811.
TopMarkings11.
1Si88x4xTopMarking(20-PinWideBodySOIC)11.
2TopMarkingExplanation(20-PinWideBodySOIC)Line1Marking:BasePartNumberOrderingOptionsSeeOrderingGuideformoreinfor-mation.
Si88x4=5kVrated4channeldigitalisolatorwithdc-dcconverterX=2,42=dc-dcshutdown4=ExternalFETY=NumberofreversechannelsZ=E,BE=defaulthighB=defaultlowR=C,DC=3.
75kVRMSD=5kVRMSisolationratingLine2Marking:YY=YearWW=WorkweekAssignedbytheAssemblyHouse.
Correspondstotheyearandworkweekofthemolddate.
TTTTTT=MfgCodeManufacturingCodefromAssemblyPurchaseOrderform.
Line3Marking:Circle=1.
5mmDiameter(CenterJustified)"e4"Pb-FreeSymbolCountryofOriginISOCodeAbbreviationTW=TaiwanSi88x4xDataSheetTopMarkingssilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|4911.
3Si88x4xTopMarking(24-PinWideBodySOIC)11.
4TopMarkingExplanation(24-PinWideBodySOIC)Line1Marking:BasePartNumberOrderingOptionsSeeOrderingGuideformorein-formation.
Si88x4=5kVrated4channeldigitalisolatorwithdc-dcconvert-erX=3,63=Full-featureddc-dcwithinternalFET6=Full-featureddc-dcwithexternalFETY=NumberofreversechannelsZ=E,BE=defaulthighB=defaultlowR=C,DC=3.
75kVRMSD=5kVRMSisolationratingLine2Marking:YY=YearWW=WorkweekAssignedbytheAssemblyHouse.
Correspondstotheyearandworkweekofthemolddate.
TTTTTT=MfgCodeManufacturingCodefromAssemblyPurchaseOrderform.
Line3Marking:Circle=1.
5mmDiameter(CenterJustified)"e4"Pb-FreeSymbolCountryofOriginISOCodeAbbreviationTW=TaiwanSi88x4xDataSheetTopMarkingssilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|5012.
RevisionHistoryRev.
1.
05May2020AddedSi88642EC-AStoTable2.
2OrderingGuideforAutomotiveGradeOPNsRev.
1.
04May2019AddedSi88342EC-AStoTable2.
2OrderingGuideforAutomotiveGradeOPNsRev.
1.
03March2019CorrectedTransformerSpecificationtableRev.
1.
02November2018UpdatedTransformerSpecificationtableRev.
1.
01March2018AddedAutomotiveGradeOrderingGuideUpdatedOrderingGuideTable2.
1UpdatedTransformerTable3.
1UpdatedSpecTable4.
2Addedsection5.
1(Calculatingtotalcurrent)Rev.
0.
6August2015ReformattedfiguresCorrectedtyposAddedtextforclaritySi88x4xDataSheetRevisionHistorysilabs.
com|Buildingamoreconnectedworld.
Rev.
1.
05|51